Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff9c6a121d662d43…

MALICIOUS

PDF

50.9 KB Created: 2020-08-01 14:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d4f6202ee75ae061dfacbc7e9567260 SHA-1: e75d0ab0de047b391c9c01b29c2c6b3725eb26ff SHA-256: ff9c6a121d662d431fc160e2c2f81dbbc1ba5bb32af20e3cd37a00709ff6e124
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=update+local+branch+with+master, which is flagged as a known malicious redirector. The document body's title, 'Update local branch with master', is likely a lure to encourage clicks on the embedded links.

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=update+local+branch+with+master In PDF document text
    • http://files.pachamama-yoga.com/uploads/1/3/1/4/131406437/6295115.pdfIn PDF document text
    • http://files.agorapublications.com/uploads/1/3/0/7/130775462/lifebi.pdfIn PDF document text
    • http://files.ericaamatori.com/uploads/1/3/2/7/132740413/niwejilamubute.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/1/0440/8904/9238/files/71114541796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2786/3464/files/best_legendaries_for_ret_paladin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/pefogejorikedumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/gasapisagufotoludojer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/71855971397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/sojenevixog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/10656680377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/32549579309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/76332808262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/zefatutinelazuritumos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4098/8575/files/49068412319.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

Related samples 3

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_off000079a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 5536 bytes
SHA-256: 7dfc7f0dac538a1670d08f0a996a20a2abd49630370c675d246ebf22eab153e3
font_01_sfnt_off00008c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C50 18728 bytes
SHA-256: a9a492d091472c3a4301d4b06390777c17f484f0092a43d45d5e51733e76d4cd

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