Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71ec7f55c0363b0…

MALICIOUS

PDF

50.0 KB Created: 2020-08-07 13:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0a8f5b5c1c9cdacbb81e730d327517f SHA-1: 78a2dd5b9887e168faf153558a3f73d58f4fb66c SHA-256: e71ec7f55c0363b0330e6a13d9d6a51e42678ad2759956f8428d23d4ecb25d7d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=akuntansi+pajak+atas+piutang+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is related to tax accounting, which is likely a lure. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.cc/pify?keyword=akuntansi+pajak+atas+piutang+pdf In PDF document text
    • http://files.stitchstand.com/uploads/1/3/0/7/130775567/rojukovekokas.pdfIn PDF document text
    • http://files.loneforestwolfphotography.com/uploads/1/3/0/7/130776486/weloritofikuke.pdfIn PDF document text
    • http://files.livarnold.com/uploads/1/3/0/7/130776150/8035510.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/vozojasusejadamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/apush_chapter_3_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/mechanical_engineering_interview_questions_and_answers_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7847/files/21051877299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/mewadaluwuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/28290229543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7944/8216/files/adobe_acrobat_reader_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/73598594445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/forasopijafonotobojak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/61250761914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/77804134147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/95008483373.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
🗂 Part of campaign: loneforestwolfphotography.com 3 samples

Related samples 4

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_off000084f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F0 5212 bytes
SHA-256: af3033e59e4832615700011474aebccfcda52c505b2981df36d4329632882525
font_01_sfnt_off000096cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CD 10516 bytes
SHA-256: 337d5076ce7ec4bbec93f2c4ae9a8949a8db53fb8ab2ae7179dbf5c5e33c8f4b

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