Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0cf85fcaaa5a0e…

MALICIOUS

PDF

54.1 KB Created: 2020-07-27 12:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 929df5ff700c59fcd475a6e4198420ad SHA-1: 63a8ab821109b9df1d49e655ddf81a451b4b382b SHA-256: 7d0cf85fcaaa5a0eb8b8b1836ec73c8d345294bbfc931d6a8513c95bccae3097
194 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=everfi+module+1+savings+final+quiz+answers`, which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Everfi module 1 savings final quiz answers', indicating a phishing or scam attempt. The presence of multiple embedded links to external PDFs, many hosted on Shopify, further supports the link farm and redirector heuristic.

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.ru/pify?keyword=everfi+module+1+savings+final+quiz+answers In PDF document text
    • http://files.dancoopey.com/uploads/1/3/0/8/130814926/2acdb6fa.pdfIn PDF document text
    • http://files.pageantsbymindy.com/uploads/1/3/2/7/132740193/nofutegi.pdfIn PDF document text
    • http://files.swartzshowhorses.com/uploads/1/3/1/1/131163613/45de51953ca9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/ronamuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/nogutefibuxeranuzalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7883/5606/files/44389605607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/12910382947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/90711578586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/ruzobexorujib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/33329084440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3409/9362/files/danegadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7294/5312/files/32015197154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000713a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 4808 bytes
SHA-256: 30cea61528baefc7a5932a33b9f3396c1785dd48f505b1583c52c2d6300dfcb1
font_01_sfnt_off00008251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8251 5364 bytes
SHA-256: cbdef59aa5a649f2a3d59f18dfe74d488e6db7c4fdb230daa7c92743674a0e5e
font_02_sfnt_off0000947c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947C 7084 bytes
SHA-256: 130c065ed36e2a87f94bedd7982a750c1de19903a03f366a3037419f9ff82bce
font_03_sfnt_off0000a74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA74D 10212 bytes
SHA-256: 58ac2104979fcefed810d22af40f2beae96e469b0d33735b93d98aec6b337084