Malicious PDF — malware analysis report

Static analysis result for SHA-256 13af78a46517547b…

MALICIOUS

PDF

46.1 KB Created: 2020-08-08 06:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d28c2125dcb6fd4a080d17e08290b984 SHA-1: 7e0732c0b79106297a66750619d3f12bc5111517 SHA-256: 13af78a46517547b22e14597727f2005eb87f57df03d2e785e74e9da3903c986
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing attempt. The primary malicious URL identified is a redirector that likely leads to further malicious content or phishing pages. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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=basic+sql+commands+pdf In PDF document text
    • http://files.aishi.co.uk/uploads/1/3/0/7/130775171/c2ad9f5a24b6fd.pdfIn PDF document text
    • http://files.theflatspot.net/uploads/1/3/1/4/131437293/koserapudag-fexememedi-pujirasob-debobimakem.pdfIn PDF document text
    • http://files.stonetreematerials.com/uploads/1/3/1/3/131380953/6846582.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/1/0435/9297/4499/files/91621081803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/silogixivedixobex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/conan_exiles_multihome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/modojinurubojep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/anatomy_and_physiology_book_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/womigawavanaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/73218140967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/reduce_size_acrobat_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1401/1555/files/40196551739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6571/9449/files/nagupepikesuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/adp_time_saver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/arabic_calligraphy_for_beginners.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 7

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_off000073b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B2 5380 bytes
SHA-256: 2421e0b90259271797f1aea82d19b20006c187a3ea625a6e5123b498c7a8705c
font_01_sfnt_off000085ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 11708 bytes
SHA-256: da4d45c91dbc14a08cea5d968ea4eadb53d72ac65f1fcde20f810b4441fb1128

Open this report in the interactive analyzer, or submit your own file for analysis.