Malicious PDF — malware analysis report

Static analysis result for SHA-256 960cf7e59b0dbdee…

MALICIOUS

PDF

45.8 KB Created: 2020-08-23 11:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95bfac69b8fe99ce3ba8f90e4a305cf8 SHA-1: e7a6658fb018b22f8e2cef7ef44b1ba60a604b78 SHA-256: 960cf7e59b0dbdeec4a6d50c5139e6575735ef352d6c3c9eb372bdba8751e4fd
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=harga+avanza+veloz+2012+manual+putih'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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.ru/pify?keyword=harga+avanza+veloz+2012+manual+putih In PDF document text
    • http://files.calvarywooddale.net/uploads/1/3/1/4/131406412/746f7bd.pdfIn PDF document text
    • http://files.relevantfive.com/uploads/1/3/1/3/131379054/xeranojebeputajiso.pdfIn PDF document text
    • http://savavav.votejasonmcguire.com/uploads/1/3/1/3/131380480/povuvevetax.pdfIn PDF document text
    • http://files.sjraise.org/uploads/1/3/1/4/131452878/ritorevovafufux-xutokegaperolu-letamixix-luwov.pdfIn PDF document text
    • http://sofogez.tlccasolafarms.com/uploads/1/3/1/3/131379730/8438514.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/1/0432/0316/6369/files/dasulujevawunekatewobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/62538709715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/astell_kern_ak100_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/benignidade_dicionario_informal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/sd_driver_licensing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3744/8609/files/5878570962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6667/8696/files/uk_address_in_us_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7379/7285/files/46659468943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6164/2144/files/godox_tt600_guide_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/kebagagafagupipugag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/xenanox.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 5452 bytes
SHA-256: cc53954b6641bf8411a6ef030507558eec3a044162c860e2fd876bc03744ee09
font_01_sfnt_off0000796b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796B 15072 bytes
SHA-256: 763e5260e90aa8ddcf5bb2ef2db9a7a6755fbec6c6c6586e84c3b58f90087de2