Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7507af8c516e97…

MALICIOUS

PDF

69.2 KB Created: 2020-09-10 10:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03e2eccd644a4b6ff1575cd85cc65237 SHA-1: 6567c9784d718ebe8ea545e25b53631e7822c115 SHA-256: 0d7507af8c516e97d4ab62422cc88b637adbb8b53b7133ab5b0e461b1d187f5c
202 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 part of an SEO link farm, with one URL pointing to known malicious infrastructure. The document body and heuristics also suggest an advance-fee scam or urgency lure, aiming to trick the user into clicking the malicious link. While no scripts were extracted, the presence of embedded URLs and the nature of the lures strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=nice+vte+guidelines+2015
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/movilidad_articular_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/badaburerotegor.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/bp_recording_chart.pdf
    • https://static.usrfiles.com/ugd/b8c837_cb372ff0ee1348b0aebb87c1f0f29cec.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b89e0df680240afac0dccc363cee84e.pdf
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/zalozanuzavisegupejod.pdf
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/bevivasisowezes.pdf
    • https://cdn.shopify.com/s/files/1/0433/6277/9295/files/fobar.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6899/files/rivukepi.pdf
    • https://cdn.shopify.com/s/files/1/0438/8877/1227/files/75467655822.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8567/files/both_either_neither_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/vowakojakinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/nawexosumidoxafex.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d057.bin
c858fd3215f61485f58b68c1d97ac1c6286e0ef978fc565ccc3702e6b1f9d3af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD057 5280 bytes
font_01_sfnt_off0000e284.bin
5d2106bb536f7fadcc5bcb86a4424a724b3cc84898c5b18290151cf41d732cf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE284 11092 bytes

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