Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1dfc7e9b04b2e9f…

MALICIOUS

PDF

37.0 KB Created: 2020-08-13 23:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b32d32c033419e0e6f1cadf3bd33f56 SHA-1: c3ebf8e1690c75f7ab7136e3816e82fad93c94d6 SHA-256: d1dfc7e9b04b2e9f8d727c7fa4e868190181686899d562c69861a75aa194c648
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=electromagnetic+spectrum+review+worksheet'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains hosting PDF files. The document body, though partially corrupted, contains text related to an 'Electromagnetic spectrum review worksheet' and includes the same malicious redirector URL and several Shopify PDF links, suggesting a lure to disguise malicious redirection.

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.cc/pify?keyword=electromagnetic+spectrum+review+worksheet In PDF document text
    • http://files.minagcapital.com/uploads/1/3/1/6/131607522/zejojibosake_levupufivaxuvix.pdfIn PDF document text
    • http://zisib.ianwarder.com/uploads/1/3/2/8/132814930/rotipugewux.pdfIn PDF document text
    • http://files.rta-ot.com/uploads/1/3/0/7/130775870/2206456.pdfIn PDF document text
    • http://dupobera.czarproduction.com/uploads/1/3/0/9/130969077/27f702c9274702.pdfIn PDF document text
    • http://files.communityactionboonewinn.org/uploads/1/3/0/7/130775116/4e7630651.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/1/0428/7227/5103/files/61849544637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/47693697228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1774/6070/files/list_of_algebraic_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/58057949138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/46427258621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3016/6176/files/13721932164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8469/files/32210103060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/16360827065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/liwiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/vmware_vsphere_6._7_install_configure_manage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/galletas_de_la_suerte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/68501626419.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_off00004699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4699 5400 bytes
SHA-256: 4914725fe6213d82efe09d14b8bb7231839201fdb24b107b2695aa71ee5e8907
font_01_sfnt_off000058d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D7 9364 bytes
SHA-256: 5861ec34372de26739607f5fd448319cebbdfbd7fa5d4050e8b978bac542215d
font_02_sfnt_off000078b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34