Malicious PDF — malware analysis report

Static analysis result for SHA-256 419ac9f336482a54…

MALICIOUS

PDF

42.7 KB Created: 2020-08-09 11:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bca3009ee79d9b58b29c3531624da95 SHA-1: 520ad48d1b1d2d7bca80ab36943ffb204424205b SHA-256: 419ac9f336482a5499e186ab5f83d4602c3f16a2471fd3ba46452498c9d86343
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body text, though heavily obfuscated, includes the phrase 'public private partnership book pdf' and a URL that matches the redirector. This suggests the document is designed to trick users into clicking malicious links, likely leading to further compromise.

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=public+private+partnership+book+pdf In PDF document text
    • http://files.nationsmidwifery.com/uploads/1/3/0/7/130775196/jejabonizojubur-najuje.pdfIn PDF document text
    • http://bidubama.gretchenwilliamsyoga.com/uploads/1/3/2/3/132303382/naxelowusu_gipubabufap.pdfIn PDF document text
    • http://files.duidelijkengels.nl/uploads/1/3/1/4/131438641/bebijovojow.pdfIn PDF document text
    • http://files.ncbbq4u.com/uploads/1/3/1/3/131398292/1689856.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/1/0435/8501/1869/files/jesojadojezaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/78473010968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/pajototijexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/tetibipeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/zipuvobideb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/xikolukuruwulakuwesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/xeruguwobudebubikidonax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/satapegoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/31044058526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/8013276812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/srimad_bhagavatam_10th_canto.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 8

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_off000067f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F9 5508 bytes
SHA-256: 6cf79ebf44765c1821584381b9add50c4423150c257cb93a32aac705ab0de3ab
font_01_sfnt_off00007aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 10344 bytes
SHA-256: 0c78f6bfa9c9994cd4e02fdd446912ce698205f2f363801dc9768bac104e7e0e

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