Malicious PDF — malware analysis report

Static analysis result for SHA-256 87794f24e9f4339f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-03 22:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8408f03d43d05cec449fa1fef64fb37 SHA-1: a6987cbca5ca35e0aec48593b7bc1ec07cf79689 SHA-256: 87794f24e9f4339f0fae1a0d3df5df2f5b413880afb1d049e9d056a35ab3d9d0
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt to drive traffic to malicious infrastructure. The document body, though corrupted, contains the URL https://ttraff.com/pify?keyword=pdf+to+dwg+converter+2020+online, which is identified as a malicious redirector. The presence of numerous links to PDFs on Shopify and other file-hosting sites suggests an attempt to create a link farm for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=pdf+to+dwg+converter+2020+online In PDF document text
    • http://files.coloryourworldbymadara.com/uploads/1/3/1/4/131452861/5bb91.pdfIn PDF document text
    • http://files.martinsburgflipside.com/uploads/1/3/1/8/131871433/9608765.pdfIn PDF document text
    • http://files.stockportmalayali.org/uploads/1/3/1/4/131483337/lopumanubugizis.pdfIn PDF document text
    • http://files.electramicllc.com/uploads/1/3/0/7/130740242/b07e34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/dogukefiwafofuwisajup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/fikizifomar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/pafifepero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2344/0804/files/bodabudadog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/korut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0325/6737/files/analytical_methods_in_chemistry_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/26578732638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/masirekobana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/zerekalowigufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/boresojusunugirajej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 5016 bytes
SHA-256: d51d5e7784e6e660702e87e048c362540f3e40f249ee279e98bf5ef0a4218de1
font_01_sfnt_off000071a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A1 10284 bytes
SHA-256: 25039baf3dc016bb1215c4924bf8a8303a6ce282f03fa85aa2d9c657cc511e49
font_02_sfnt_off000094cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94CD 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333