Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb16ea95c868d9d…

MALICIOUS

PDF

61.7 KB Created: 2020-08-14 22:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d656ce93da8e148458be74322ad9c1a SHA-1: 9f42dcdab3caffbfc28bb0c2c57cf4395b4d76b5 SHA-256: 9bb16ea95c868d9d1365e237e138d9bcaeb5caeea03ea4b59a0947c57ef0e0fb
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=arcgis+9.+3+tutorial+data+free', is designed to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm intended to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the primary attack vector is the embedded malicious URL.

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=arcgis+9.+3+tutorial+data+free In PDF document text
    • http://files.qmworkplacement.com/uploads/1/3/1/8/131871979/woguwivisutov.pdfIn PDF document text
    • http://puzejate.physeddude.com/uploads/1/3/1/4/131453384/wuxikidad.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/1/0431/5385/0528/files/76454392250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/beforonegavin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5559/files/the_economist_23rd_march_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/49574323357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/ruzojebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/furasapegufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0141/3795/files/american_english_file_starter_2nd_sb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/40281704478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/rexojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/39126315966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/61842382396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5447/files/nufilavipubipabogesosopo.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 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_off0000b458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB458 5528 bytes
SHA-256: 7dc68c39e63081a828a78d3e0399504447d7397ded7a7fa6e076d0adb8c6515c
font_01_sfnt_off0000c72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72A 10140 bytes
SHA-256: 10ea4cfeb7b0f22a419572d4869a0ecb51d514f06912fe7b16d88cd199e81046

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