Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1b359d053a93a8…

MALICIOUS

PDF

61.1 KB Created: 2020-08-01 03:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5179162627767abc7569ce59ad12c65b SHA-1: 6ad026abbf281474da50f46651da37414bcfedaa SHA-256: aa1b359d053a93a86ccd2f980951bfd3c0c5d8f00540ace30374624737295a0f
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to a known malicious redirector. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=absolute+value+in+java', is also flagged as malicious. This suggests the primary function of the PDF is to redirect users to malicious infrastructure.

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=absolute+value+in+java In PDF document text
    • http://files.merakiimeasure.com/uploads/1/3/0/8/130874567/7022705.pdfIn PDF document text
    • http://files.sabahhomestaykualapenyu.com/uploads/1/3/1/4/131483265/ximofepo_solejadapuxas.pdfIn PDF document text
    • http://files.simplified-networking.com/uploads/1/3/0/8/130813577/bumabelipulat.pdfIn PDF document text
    • http://files.davidallisondewitt.com/uploads/1/3/2/7/132740805/jegalotudag.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/1/0430/0010/3071/files/54861776004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/27474574398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/25831132624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1385/5643/files/80347073991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/kosimagewidadaxupebeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81579197248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/wuxusowodewadazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/my_michelle_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/wemapegobidol.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 8

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_off0000b332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB332 4848 bytes
SHA-256: 6a3c82b97305b652099007151a326a983b5bbda34b671049d120ad50f9b57c25
font_01_sfnt_off0000c3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CD 10460 bytes
SHA-256: 1d5f724f75e9d75780b8eeab1db10b61e665d23fda0556aecb53463310258067

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