Malicious PDF — malware analysis report

Static analysis result for SHA-256 aefc2df89871e72c…

MALICIOUS

PDF

43.9 KB Created: 2020-08-27 14:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b4100857d42cac2274d78425ea074ed SHA-1: 67a66cc0721f3e7eaae85b7097e773a8f57322b6 SHA-256: aefc2df89871e72cf5be183ee68cbf5b2407f3a6eab83a9a9c231c6e4b7e6a9b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to external resources, including a known malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'free printable invoice template'. The primary malicious link identified is 'https://ttraff.link/pify?keyword=maksuton+tulostettava+laskutuspohja', which likely leads to further malicious content. The presence of a link farm and a malicious redirector indicates a phishing or scam 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.link/pify?keyword=maksuton+tulostettava+laskutuspohja In PDF document text
    • http://ziwedomo.forbiddenflaverz.com/uploads/1/3/1/3/131398244/8973608.pdfIn PDF document text
    • http://lupeb.daydreamscakecompany.com/uploads/1/3/0/9/130969153/3202823.pdfIn PDF document text
    • http://files.northlittletonpromise.org/uploads/1/3/2/6/132682974/9290007.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/1/0446/4685/8915/files/automata_theory_languages_and_computation_hopcroft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/tumitulakimuvomalorab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0714/7166/files/direpaxipepisog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9290/2039/files/58896212719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8792/9245/files/characters_not_allowed_in_filenames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/the_world_s_end_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7542/0579/files/18754191840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/gamolagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/97440938811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3077/files/ca_course_full_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/catalogue_ph_kin_hafele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/52408553586.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 2

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_off000069d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D3 5016 bytes
SHA-256: 2b3b00107e23b1e97d36eba7682181361721944cb0f9fef6faf26636a0c3786c
font_01_sfnt_off00007af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF5 11552 bytes
SHA-256: b24a56577c2135c2a064bab8b351f0b7ba671edc8769435e6358bd26efbf2c43

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