Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7bf72a9e6583fc…

MALICIOUS

PDF

43.2 KB Authoring application: PDFedit First seen: 2020-09-24
MD5: 54e87f21666ee27a64c396de640ad2ec SHA-1: f74dafdc8434e927180bc9e04ed0120e2134c97e SHA-256: 9d7bf72a9e6583fcba373b3e680d86eb568e5a2916ceedcb77be3389ad6b6476
192 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags it as phishing-related. The embedded URLs are likely used to redirect users to malicious content or to manipulate search engine rankings. The document body text is heavily obfuscated and does not provide clear user-facing content, but the link farm strongly suggests a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://mercadopole.com/uploads/1/3/0/2/130288549/2666614.pdf In PDF document text
    • http://hedge2hedge.com/uploads/1/3/0/7/130739119/lerezu_josumimijokoj.pdfIn PDF document text
    • http://islamicbankingblog.net/uploads/1/3/0/6/130605254/a76c49f21f3b8.pdfIn PDF document text
    • http://aimpointprojects.com/uploads/1/3/0/2/130272977/nebotatowixu.pdfIn PDF document text
    • http://my-chat-random-thoughts.club/uploads/1/3/0/5/130543976/2262070.pdfIn PDF document text
    • http://bayviewblast.com/uploads/1/3/0/6/130639278/f9d770.pdfIn PDF document text
    • http://adhillc.com/uploads/1/3/0/5/130588297/fozisoxafidumutejezo.pdfIn PDF document text
    • http://peru.cctvradio.com/uploads/1/3/0/7/130776478/4728883.pdfIn PDF document text
    • http://brandverletzt.de/uploads/1/3/0/2/130287553/nukemudujunupo-paxupilara-sejebo-lefubagatimad.pdfIn PDF document text
    • http://studio-dekoboko.com/uploads/1/3/0/6/130605471/452153.pdfIn PDF document text
    • http://webmail.umweltschutzverein.de/uploads/1/3/0/2/130271116/zekomevalunesode.pdfIn PDF document text
    • http://empoweredacademic.com/uploads/1/3/0/7/130739139/7264eed4f61.pdfIn PDF document text
    • http://paymaat.com/uploads/1/3/0/7/130739275/zuxovi.pdfIn PDF document text
    • http://zziggy.com/uploads/1/3/0/5/130550882/46cd8d.pdfIn PDF document text
    • http://stormjustice.org/uploads/1/3/0/7/130775461/cfd5c.pdfIn PDF document text
    • http://reptilerescueandremovalservice.com/uploads/1/3/0/5/130552043/7604390.pdfIn PDF document text
    • http://torrezion.com/uploads/1/3/0/6/130604637/495ce.pdfIn PDF document text
    • http://you-x-wallet.club/uploads/1/3/0/7/130775742/6263477.pdfIn PDF document text
    • http://skanlabnorge.com/uploads/1/3/0/6/130639948/pigodokagadexudumu.pdfIn PDF document text
    • http://xinli88wangshangyule.br3h.com/uploads/1/3/0/4/130488114/130488114.html#name+for+similar+figures+with+a+scale+factor+of+1%2F1In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BF 16160 bytes
SHA-256: 421fd66b68c2dfb72dab9790539c5c38f8dd3658fe445d82960ff9e526ace308
font_01_sfnt_off000048bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BB 8468 bytes
SHA-256: 21920669b7e8f2f52e14b09c7867c88f287a873bc8fae137bdf3c315c4a75886

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