Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a78504b13216e2d…

MALICIOUS

PDF

36.7 KB Created: 2020-08-15 01:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e75caacde9ef123e11a65edd4e524345 SHA-1: 224c3a746e22fa6665e5f3ed67df246208a9f381 SHA-256: 5a78504b13216e2db5abf926f252e402ad533d75f2f99e4f3dabbb9f87f634c7
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDFs hosted on Shopify and other domains, masquerading as free downloads. The primary redirector link, https://ttraff.com/pify?keyword=song+lollipop+lage, is flagged as malicious and likely leads to a phishing or malware distribution site. The presence of malformed streams and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.com/pify?keyword=song+lollipop+lage In PDF document text
    • http://files.percyphotos.com/uploads/1/3/2/6/132681452/xokadulosupumun.pdfIn PDF document text
    • http://files.thanetpickleballclub.com/uploads/1/3/0/7/130775734/250984.pdfIn PDF document text
    • http://files.morroandjasp.com/uploads/1/3/0/9/130969375/wojerodijudo.pdfIn PDF document text
    • http://files.digitopolis.net/uploads/1/3/1/4/131409309/zomuzasofofa_puliwi_talafuxaweda.pdfIn PDF document text
    • http://files.parshootersgolfclub.com/uploads/1/3/1/8/131857199/gezesolunajir-vakax.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/texojorigerusoxuduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/gibipevujejorig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/11196873675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/divaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/22501664041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8511/files/rectangle_all_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/26957067672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/aerodynamics_of_horizontal_axis_wind_turbines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/atomic_force_microscopy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/actual_reading_ielts_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0439/4661/files/nabokokidakesuvowes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7822/1973/files/ludemepi.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_off000053a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A5 4816 bytes
SHA-256: 284b8980ea59eead2ad572de1d0b5141dff3740cc1771a0f3aee5fb09da4cc3e
font_01_sfnt_off0000641d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641D 9956 bytes
SHA-256: 3b4028840a0d102c18eb9b8e02203cacfb4afdafe483c8ff38b56f75ad7fdc25