Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d1e6e4406c7c5e…

MALICIOUS

PDF

42.8 KB Created: 2020-08-03 13:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6a1f5128010489a8c1e79c6e3c3755b SHA-1: 215d81326f5a5866676f875fa86054d1ffabf1be SHA-256: 82d1e6e4406c7c5e4d494ab4126c5ef67fad0b4a74b97dd8a8c2ceaa1a96223f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a malicious SEO link farm, specifically advertising free study Bibles. The primary redirector URL is ttraff.com, which is known for malicious activity. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, indicating a phishing attempt to drive traffic to potentially malicious content.

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=biblias+de+estudio+gratis+en+pdf In PDF document text
    • http://files.sharomshorthorns.com/uploads/1/3/1/3/131384602/6539809.pdfIn PDF document text
    • http://files.c3edu.org/uploads/1/3/2/6/132681725/0d441893551989.pdfIn PDF document text
    • http://files.infiniteecoclean.com/uploads/1/3/1/4/131407552/mewerekot.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/1/0438/0724/4450/files/sikiwoxizaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/fovilano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/what_is_sph_slang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/63547654970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4106/8958/files/mercury_classic_50_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/50421743243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7727/8623/files/westlaw_form_builder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/93080944519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8790/5446/files/58197427170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/xutivesatogavodijuboju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/68906349803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1315/8565/files/26533391401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6312/9765/files/zenediv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/judekepobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4103/8229/files/zejanamudiwawolajale.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_off0000581f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581F 5280 bytes
SHA-256: 8aeab93316e5a5b7ef9f0230db09ad516f9d72963909b68dbcce98fca5247a9a
font_01_sfnt_off00006a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 10972 bytes
SHA-256: a62bf9dc9cf4f1f41b92aff371a0d756132006347cd695047c86adade2f5824e
font_02_sfnt_off00008dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34