Malicious PDF — malware analysis report

Static analysis result for SHA-256 73012331cfc7e350…

MALICIOUS

PDF

46.7 KB Created: 2020-08-23 18:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 661c6ec949a22f16ed6ba67fd53e6df4 SHA-1: 031b19cc48bb796c19ae35919586c658da12fe86 SHA-256: 73012331cfc7e3503141a38e707e12c71ee8ea5d218ea249e1f89d103aa75ace
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many pointing to a redirector service (ttraff.cc) disguised as search results for technical queries. The ML classifier and heuristics strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the embedded URLs and link farm structure suggest an attempt to drive traffic to malicious infrastructure.

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.cc/pify?keyword=check+if+worksheet+exists+excel+vba In PDF document text
    • http://files.irishdancect.com/uploads/1/3/0/9/130969507/jewimam_zutowawofela_pebemafofokegog_xazumujefowatin.pdfIn PDF document text
    • http://ragorug.kupecservices.ca/uploads/1/3/1/4/131482995/4839534.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/1/0434/1419/2284/files/logitech_keybaord_disable_tap_to_click.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/fesixewebufuxubiradut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/6031/0695/files/catan_seafarers_5_6_player_extension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/ios_beta_13_beta_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1465/8980/files/94585492687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4391/7719/files/ejercicios_formulacion_alcanos_alquenos_alquinos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/56017989410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/molowebokubepulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/31429496986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3320/5655/files/12610822279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0956/3045/files/javascript_loop_through_object.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/dunexuditikoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/hudson_park_bed_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9456/1188/files/intimacy_anorexia_workbook.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_off000078c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C4 5296 bytes
SHA-256: 03db1badaae1bc74d0d248d369ff8a4e34ed5f9fcfb0f86504a02880041266da
font_01_sfnt_off00008add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADD 10416 bytes
SHA-256: ef8e2e383b9648d53f66a5e4b970ecc19dba6790ac9a036c3b4c0b932dd4ecc2

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