Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3585822291e70e…

MALICIOUS

PDF

82.8 KB Created: 2021-06-27 22:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 89e5cda34f2b91cbd45719d4a55c0147 SHA-1: 9c09937d256ff9f124438f947e40074be408eadf SHA-256: ed3585822291e70e7b01e05afe9e30f79927e85d410b4514441373a346568413
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm, directing users to compromised WordPress sites hosting further malicious PDFs. The presence of a 'download button' lure reinforces the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/a199b2819ef9d45478b5ace527620403/lubewodefowajuxakevawutig.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3f87c7bbd5---lufiwerawofelivizuvuvemow.pdf
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/16093de402c6be---misasubopiripunadifuf.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b588e77e2f---savurogobemuwe.pdf
    • http://commune-bourre.com/userfiles/file/wuwavoxokufinadulapejeki.pdf
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/294ce356c6ee378a04a98dac5aef7d30/36682629291.pdf
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc5b3697410---robisefodalipejalota.pdf
    • http://salkim.com/userfiles/file/42446172906.pdf
    • http://scheidenschiedam.nl/uploads//file/66662446615.pdf
    • http://animationcoach.com/userfiles/file/53114930622.pdf
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/pmf6m60rao6s0algjg7c85ch1t/60524905298.pdf
    • https://africanresearchcenter.com/userfiles/file/73152549699.pdf
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/3k9j5bfi89dcuk3o7k5ml4tp25/79163679194.pdf
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/b159a8063552cea47c3f15a89fa329b2/pinox.pdf
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/eun1nj394qtajkg3e82dch19v5/buwujizewinudusidezu.pdf
    • http://prestopc.it/upload/file/vorusidakufomapiloji.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5bca53b818---digerexenejexilenasut.pdf
    • http://mmckno2010.zkosuchdol.info/files/vujotasusit.pdf
    • http://synerfreight.com/syner_upload/images/files/neduj.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c587cba3c6d---78116993634.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/7ff5c55c9569fa50287015dfa15b983d/vidoxugu.pdf
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160847b7cd90d6---larazetuwijopix.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4f3205e78---rasajoselofitosiver.pdf
    • http://kagoshimakojintaxi.com/userfiles/file/36716629258.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=perfect+english+grammar+past+simple+past+continuous
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dacb.bin
ea87e42a03c9e16534b4fc63c729bf4f99789571d9b87fe22cb2f9159b51669a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDACB 11028 bytes
font_01_sfnt_off0000f445.bin
547158fe40ebf82a3ed7d1c97d60345b01005af5557a6d4f8c4aa02cd69efe3f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF445 18584 bytes
font_02_sfnt_off00012399.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12399 16792 bytes