Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0855a1c74d006f5…

MALICIOUS

PDF

54.5 KB Created: 2020-08-05 12:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98d70b3fe21e465c805418a518c3f77a SHA-1: 8a7b28332fb7b03f1374cf4134e687fb58cb538d SHA-256: a0855a1c74d006f5314c2cc69560d5e65bf11f5be48e0a643c8735421189f6e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a vocabulary download, which is a common social engineering tactic. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the primary URL. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm to improve SEO for malicious content. No scripts were extracted, but the embedded link structure strongly suggests a phishing or malware delivery attempt.

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=test+your+business+vocabulary+in+use+advanced+pdf+download In PDF document text
    • http://ligixefog.cliftonvale.com/uploads/1/3/1/0/131070581/fegalulejid.pdfIn PDF document text
    • http://files.amberpipskycounselling.com/uploads/1/3/1/4/131437778/123ae8de4.pdfIn PDF document text
    • http://files.happybabylaser.com/uploads/1/3/0/7/130740049/magijam-palidafazise-kosijebijuku.pdfIn PDF document text
    • http://files.globalphonetools.co.uk/uploads/1/3/2/8/132814476/buxunajoxut-samibelilapu-dozan-pibobebatok.pdfIn PDF document text
    • http://files.investment-studio.com/uploads/1/3/0/7/130739982/tivitaluzem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/sf-_15_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/26681159469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5042/9598/files/manual_de_gramatica_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/95149201979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/zexokofujepatajox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/43886506346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/rules_of_aquisition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2915/2423/files/josebevafotunaxipage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/wufexurasopumubud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8243/9063/files/sega_saturn_action_replay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/burn_iso_to_usb_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/jewuzulogikiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/va_nearest_living_relative_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8861 5372 bytes
SHA-256: 9be9b4b2629dec5262305d4573ee71d45e09f0e770d990326677318fd1427139
font_01_sfnt_off00009aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ACA 10212 bytes
SHA-256: 7798d7cf81e332560cf116be885e7845486157228025fb8cf2528de6dd5409c3
font_02_sfnt_off0000bdaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDAF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3