Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f1fc7c6f21a7f3…

MALICIOUS

PDF

168.7 KB Created: 2020-08-05 01:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26bf497f66a1e3f58d4f16835bcf2414 SHA-1: c0ff50fbc514bbc310ab3292f21f9c4d17df89ca SHA-256: 82f1fc7c6f21a7f338482a5d79a636564f49bc5ed13425c535c583051f4f6527
134 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and uses an advance-fee scam lure, presenting itself as a 'Venezuela crisis summary pdf'. The embedded URL, https://ttraff.com/pify?keyword=venezuela+crisis+summary+pdf, is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and malicious URL suggest an attempt to redirect the user to a phishing or scam page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=venezuela+crisis+summary+pdf
    • http://files.tmulder.studio/uploads/1/3/0/7/130739535/sukebogim.pdf
    • http://files.teachershallfamedodgecityks.org/uploads/1/3/2/7/132712323/paniripaxixorutes.pdf
    • http://sekajelof.treetopkidstherapy.com/uploads/1/3/1/4/131453054/0b5fe5156.pdf
    • http://files.thewallsinnorthernireland.com/uploads/1/3/1/0/131070918/lejizo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/legupafuwuwivul.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/56522835463.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/64341046973.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/sondaje_vesical_femenino.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/39568598335.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/ladevisavoxolabijukof.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2415/files/wedizal.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/venezuparexobipa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/13882127364.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/19070647503.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/909040323.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/14300113934.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/54373738685.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023cd5.bin
17a4969d50fe3724dce220a01723e4e03506d37f696e9ce2c226e0f6cc19295d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23CD5 7796 bytes
font_01_sfnt_off00025716.bin
ce4006761cf0f275fc8ee87cafe5fbf021abfa83296ffadd3ec9a80152226641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25716 5416 bytes
font_02_sfnt_off00026982.bin
a0b5c9568ec7876245899c624cef6741da7f278732fd55740a92aed541a9cfcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26982 13548 bytes

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