Malicious PDF — malware analysis report

Static analysis result for SHA-256 88116036effd247e…

MALICIOUS

PDF

57.7 KB Created: 2020-08-10 20:29:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edbad472560300459a21f9b2fd5577ac SHA-1: 990edb9ae278bcd147b273a31a229636149cf713 SHA-256: 88116036effd247e6a64e4d5e0ecb7337acb1c5459a8743f504600eb009fecfd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, which in turn points to a malicious URL. The document body, though heavily obfuscated, contains the malicious URL. This suggests the document is designed to trick users into clicking through to a potentially harmful site, likely for phishing or malware delivery.

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=elaborated+and+restricted+codes+bernstein+pdf In PDF document text
    • http://files.loftzone.net/uploads/1/3/1/4/131453855/2439109.pdfIn PDF document text
    • http://dusewoni.charlotterodenberg.com/uploads/1/3/0/7/130775169/tevopipukogagak.pdfIn PDF document text
    • http://files.stmarymagdalenelangridge.com/uploads/1/3/0/7/130776402/c7f436b7.pdfIn PDF document text
    • http://gurid.thealeutelder.com/uploads/1/3/2/8/132814930/giputunepemupofored.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/1/0433/0687/7080/files/mesujegixaxufusataxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/60564782420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/vesemija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/12609866502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/leximejoravevijuloragur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/symmetric_tree_leetcode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/9919346578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7824/4765/files/bilingual_education_pros_and_cons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/6356656602.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_off0000a323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA323 5244 bytes
SHA-256: edc066ed93f88e6520b85e9148508c1c2103947e5025da9a0402e89507415248
font_01_sfnt_off0000b4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FE 10120 bytes
SHA-256: 2fc11cd09e53b39cb1c3f3d68c84dc2eaf998b9591e13647358cd74595718e83

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