Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b206fb09e50cac…

MALICIOUS

PDF

87.6 KB Created: 2021-01-25 21:52:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 210d48dd2a4ea3658fdcf84abd4c1c22 SHA-1: d33b1dbe2940c38458005f2e9116b288c3050c5e SHA-256: e3b206fb09e50cac7b8b27d7fdabf54f4b26c2341a3e788a8fd25256a9ae565b
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating it's a redirector and part of a link farm. It contains numerous embedded links, including one to 'ggtraff.ru' and another to 'lnstagram-support.live', which are likely used to direct users to malicious content or phishing sites. The presence of these links suggests an attempt to trick users into downloading further malicious files or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://ggtraff.ru/wb?keyword=ates%20ve%20su%201100 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4390382/normal_6000facb681db.pdfIn PDF document text
    • http://lnstagram-support.live/hexa_block_puzzle_onlinei2jmf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_600c1c431a801.pdfIn PDF document text
    • http://slmit.space/bottle_flip_3d_mod_apk_1._25e0pbl.pdfIn PDF document text
    • http://ideal-it.fun/58247922988f2wza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417525/normal_5ff7c39ad606f.pdfIn PDF document text
    • https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/3005670.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450438/normal_6000e61e70783.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379611/normal_5fedfad469fee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/name_photo_on_birthday_cake_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/gujalufuvifapifepasel.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/amigdalitis_y_adenoiditis.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/pimogerexevesabilazudobe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001010f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1010F 4584 bytes
SHA-256: 1ec94a21cfaa0f3531d8c9a78700cebbc2d559f6ad25b09b322d9b1766953e42
font_01_sfnt_off000110cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CD 14380 bytes
SHA-256: 2c25873b38a25aa87d843d1c4c5df14eeb499aa067e8c3fa93f46c0a8132a45e
font_02_sfnt_off00013b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B72 16076 bytes
SHA-256: a2210e42f3365f839e08e9b5eaf4aa7c1e46744b12a40c37cd203363b74b0e26

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