Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ea768a6fa317e6…

MALICIOUS

PDF

48.3 KB Created: 2020-08-05 12:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 534c1aae7b50695bd4242ac4090586a7 SHA-1: c8776df14ae9c9614a4bd050ad400191c26116e6 SHA-256: 23ea768a6fa317e66da5b219d36e8f31963c837bb358c0801b59d905ebc0953b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One such link, 'https://ttraff.ru/pify?keyword=variables+in+psychology+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of multiple Shopify URLs, some benign and some unknown, indicates a potential attempt to blend malicious links with legitimate-looking ones.

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=variables+in+psychology+pdf In PDF document text
    • http://files.makeitpersonalllc.shop/uploads/1/3/1/4/131437554/1999985.pdfIn PDF document text
    • http://files.patriciastuartnspires.com/uploads/1/3/1/4/131411147/litixoxivez.pdfIn PDF document text
    • http://files.drtadeusik.com/uploads/1/3/0/7/130739107/4318922.pdfIn PDF document text
    • http://files.teapartypatriotplace.com/uploads/1/3/1/8/131856173/d8d132254f.pdfIn PDF document text
    • http://files.chi1833.com/uploads/1/3/1/3/131380063/03ae125.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/1/0433/5868/3291/files/rarumor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5285/9543/files/singapore_math_worksheets_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/migunege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7207/files/fagamexipanododonepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3423/files/captivated_by_you_sylvia_day_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8307/6518/files/malayalam_kambikuttan_file_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/87370797904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/vt_dmv_license_renewal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4399/5298/files/sibulupepapubuxaxamo.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 6

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_off00007eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDA 5624 bytes
SHA-256: 22016d8e829e4dc37825989f55476cd682c62746e75bf3fe253ebc850ba29892
font_01_sfnt_off000091f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F6 10008 bytes
SHA-256: 4037bfac8a89d5261741303436614ff7fee7781e4247646e8ceabe76b1e97b9c

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