Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d98a6c34afca13…

MALICIOUS

PDF

66.7 KB Created: 2020-08-20 09:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94edb683edc3f4132460528ac3ff85a6 SHA-1: a3012818f1efe71f944107d174a35693fab8f76f SHA-256: 98d98a6c34afca13359418c6b13c29398c6376006e36d1f3182e59120c451237
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=pile+load+test+report+format`. The document body, though heavily obfuscated, contains text that appears to be a lure related to a "Pile load test report format". The presence of a link farm suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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=pile+load+test+report+format In PDF document text
    • http://files.charisacctservices.com/uploads/1/3/1/6/131606758/caf2cc85aa266e.pdfIn PDF document text
    • http://detumikij.nmillerillustration.com/uploads/1/3/0/8/130873876/torotal-jamopek.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/1/0428/2325/4179/files/20443009382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/farukuxatozolesopamimuzim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/rusajosavisovupukogor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3548/2529/files/23699854495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/87409137359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5371/9453/files/4724012927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9613/6098/files/52160687520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/wesoxiwemazodina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7994/0761/files/faperorodomijivulotix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5008/1183/files/drop_table_rails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/21529379958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/95420430198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/nabcep_practice_test.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
🗂 Part of campaign: charisacctservices.com 5 samples

Related samples 4

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_off0000bd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD1A 5188 bytes
SHA-256: 1e9e457fc373d3b53630dc5fee9876af55d0b913a00e24f55c38ab7462130fa5
font_01_sfnt_off0000cea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA1 14908 bytes
SHA-256: 2feef51e43ef0044f178510d71c5b317f6c57211d661b7d3f71d297b324568f5

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