Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e800bd5fbf20fdc…

MALICIOUS

PDF

81.0 KB Created: 2021-03-11 07:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c2d48f916a604ffc215b92509e2a7e3 SHA-1: edb16a4d9a4b53a43418398f84c688bbc31c77c4 SHA-256: 7e800bd5fbf20fdc1360bfe6f1eca17c9c040f71f57c5f4d583c3f8a2c184993
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to suspicious domains and are likely part of a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect the user to malicious sites, potentially for malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=droid+maxx+2+user+manual
    • https://vajefusuvujob.weebly.com/uploads/1/3/4/4/134464162/9677400.pdf
    • https://rirujidina.weebly.com/uploads/1/3/5/9/135957349/pejoginabopez-tepugawi-pubinemali.pdf
    • http://lovemecompletely.com/78526765944xhjed.pdf
    • http://shoes-storie.club/10034047230stokv.pdf
    • https://jikufowawuful.weebly.com/uploads/1/3/2/8/132814232/d374a8d4d710e.pdf
    • http://laketofetujeso.medianewsonline.com/sewivefowovanonukujoba.pdf
    • http://instapriz.site/wedding_planner_handbook1coqy.pdf
    • http://bometaximom.scienceontheweb.net/earth_map_coloring_page.pdf
    • http://lnstagram-blue-badge-form.com/mystic_messenger_guide_casual_storyw9erv.pdf
    • http://wojesukuzak.mygamesonline.org/cisco_wrt160n_v2_specs.pdf
    • https://goruxevuretu.weebly.com/uploads/1/3/4/8/134851502/jisofevun.pdf
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/vufipekis.pdf
    • https://kapuwibipu.weebly.com/uploads/1/3/0/9/130969563/rejuminirus.pdf
    • http://xovitixekewelom.scienceontheweb.net/autocad_underlay_not_displaying.pdf
    • https://rurefisofe.weebly.com/uploads/1/3/5/3/135325463/6530130.pdf
    • http://8gusevshop.website/92939415640btws1.pdf
    • https://pixasarajesuwov.weebly.com/uploads/1/3/4/6/134688766/gazar_povewalarug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jewizopukuni/adhocracy_form_of_structure.pdf
    • https://s3.amazonaws.com/mexesazaxasa/88575341545.pdf
    • http://telosizaba.onlinewebshop.net/what_does_the_uncle_sam_character_represent.pdf
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_2badfad3dfe74ce983735095f74fe6a5.pdf?index=true
    • https://s3.amazonaws.com/fifuto/cyberlink_youcam_7_full_crack.pdf
    • https://4a0f17ac-6ce6-4c05-9546-25c48d39d9f7.filesusr.com/ugd/cd79e3_5ad177d520494d6eaa3220b91a1b2d4a.pdf?index=true
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001001e.bin
9b6debbb623312400508135493dd4de10e398ad46fd2d360a00e4e9ea9f272eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1001E 5172 bytes
font_01_sfnt_off000111a1.bin
e307e4b8cf6fa9b731ee4123cd71d7fbdb9c2687d89f38aa667175d0a374d781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111A1 10848 bytes

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