Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f039efcc558820a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 09:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcf493c7780553f9e88d5ed710207e96 SHA-1: bc7d88ced3325035117fde66f69f053e56aba09e SHA-256: 0f039efcc558820a41e02054466e24f85bdcdfa1bd8c797c32e2700ff9ba83e9
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure like 'ttraff.com'. This suggests the document is designed to lure users to external sites, potentially for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized links further supports a malicious intent to drive traffic to potentially harmful destinations.

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.com/pify?keyword=dell+poweredge+fx2+pdf In PDF document text
    • http://junule.lowvisionnd.com/uploads/1/3/1/4/131452821/tezodugibogup_zubidumezufak_nuwigutilo_xifadaluji.pdfIn PDF document text
    • http://files.hsc3knives.com/uploads/1/3/0/9/130969243/a00465f049b.pdfIn PDF document text
    • http://files.intempodanceensemble.org/uploads/1/3/1/8/131871874/wedodav-tipuzajuvetidiw-luwotapupivegus.pdfIn PDF document text
    • http://getub.boxelderfoodpantry.org/uploads/1/3/2/6/132682787/342f934d89b4b34.pdfIn PDF document text
    • http://terowo.floorstogoblog.com/uploads/1/3/1/6/131636725/wakizajenozo.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/1/0434/2520/2325/files/mcdonalds_online_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/77624182443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/fimagipalabuzubeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5601/2191/files/shon_harris_cissp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/15267428696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/45229955327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/jilam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/64060008907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/49636085445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/pafagabumuwiwijipojimele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/zuwulawolegusubevozagula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/apocrypha_concordance.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_off00006096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 5112 bytes
SHA-256: ddf053ed456e16dce42e52884fe0a8c9776577959db2588a5a24e30a883885b8
font_01_sfnt_off00007230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7230 10372 bytes
SHA-256: 033a1d5db32886b9372c0bca59202a991c6df901faed2fce23665c28de5f1e86