Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ce2fa32d2d8f62…

MALICIOUS

PDF

43.8 KB Created: 2020-08-07 13:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 193cc7ef9efa29b1803198b0d8f584e1 SHA-1: 52cfa1d3071854ded962ebcf5418bf56ec5a7066 SHA-256: e7ce2fa32d2d8f621ef0c089e3740a860fd61dcb0a05335961f28de276facaaf
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to Shopify domains, suggesting an attempt at SEO manipulation or link farming. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=types+of+assimilation+in+english+pdf'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, also contains URLs, reinforcing the malicious redirection pattern.

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=types+of+assimilation+in+english+pdf In PDF document text
    • http://xuxupag.nicholasclausen.com/uploads/1/3/1/4/131453329/c638b8d1a61.pdfIn PDF document text
    • http://files.lhasaapso.is/uploads/1/3/1/4/131482884/zikisunagew.pdfIn PDF document text
    • http://files.dbyj.com/uploads/1/3/1/3/131383580/memomaxo.pdfIn PDF document text
    • http://files.eridecanada.ca/uploads/1/3/0/8/130813827/c7c8d6.pdfIn PDF document text
    • http://files.estevezdesigns.com/uploads/1/3/1/3/131381006/e39afb2b0.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/1/0429/4243/1395/files/miwoxuseripegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8212/5205/files/shinto_rituals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57379697448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/tomekifoninujotenunom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/6th_grade_math_review_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/minecraft_gamerule_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/subatebilimikakolabubufex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/manual_d_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70277109097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/darkest_hour_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/bixarupeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/38691262725.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_off000067db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DB 5412 bytes
SHA-256: 38785dff967a3f2eb2ce52eb875aa1df3201fb94446bad52c277f6516ed4ab95
font_01_sfnt_off00007a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A28 12012 bytes
SHA-256: e96ecfc6092a65516adafbe5432d0857b6e6c1f88943b33fa05b86faba2e9bd0