Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1e40b5b31516653…

MALICIOUS

PDF

44.8 KB Created: 2020-08-11 02:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 617a4938055bbe3ceef5740ff8d891f1 SHA-1: fd6dfc8395b78499b089785b37678ff903182b3e SHA-256: a1e40b5b31516653593495056f49fa53b162f025ad708c13eaf5f9093fe0114e
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=centrales+termicas+en+el+peru+pdf'. This indicates the document's purpose is to redirect users to potentially harmful content. The document body itself is heavily obfuscated but contains references to the redirector URL and numerous other PDF links hosted on Shopify, suggesting a SEO-based lure tactic.

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=centrales+termicas+en+el+peru+pdf In PDF document text
    • http://files.mymobilervservice.com/uploads/1/3/0/8/130874582/sopeva.pdfIn PDF document text
    • http://zizasimet.kauaimusiceducation.org/uploads/1/3/0/7/130740596/boweraf.pdfIn PDF document text
    • http://xawinej.rayzinkanefarm.com/uploads/1/3/1/3/131384401/jojenedafa.pdfIn PDF document text
    • http://files.outonalimbboutique.com/uploads/1/3/2/3/132303351/lujokaser.pdfIn PDF document text
    • http://files.vulturepeakmines.com/uploads/1/3/1/3/131398194/famipusesiterag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/52636564637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1340/5850/files/17462219406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/32189351877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2363/6379/files/studio_apartment_floor_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6220/files/can_am_defender_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/79920994062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/15267428696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9879/1329/files/89798414248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/murisetobejufitug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/61461353757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4388/0093/files/cabalistic_encyclopedia_david_godwin.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6247 5096 bytes
SHA-256: a27ff21c717d813bd025e3840c59a89f99eef7ec4f9892e9b53b586fbc48cd8b
font_01_sfnt_off0000737b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 10764 bytes
SHA-256: e1f7eaed749bb10dc147b99df48736c5c72a9a94f7be9fdf264b006c558165fb
font_02_sfnt_off00009696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9696 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2