Malicious PDF — malware analysis report

Static analysis result for SHA-256 1955492b2825f8ee…

MALICIOUS

PDF

44.4 KB Created: 2020-08-18 20:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6551c9eb8e0b2727f9891b862c6ce751 SHA-1: 1cdc9b382c4c24b45bb3566293f7e8c68f2e2fb9 SHA-256: 1955492b2825f8eeb7398e5ba4154c2813592a1e1f92f346959568f85aa8610b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body and heuristics indicate a lure for an advance-fee scam, likely aiming to trick users into clicking the malicious link. The presence of many PDF links suggests a link farm or redirection strategy. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.
  • 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=what+is+the+meaning+of+inception+report
    • http://files.kneadmassagetherapy.com/uploads/1/3/0/9/130969944/6777346.pdf
    • http://files.allieconradphoto.com/uploads/1/3/0/7/130739268/856770.pdf
    • http://files.aigamanuiaclinic.com/uploads/1/3/2/8/132814967/kelovujozo.pdf
    • http://jegeleno.kogsafe.com/uploads/1/3/2/6/132681482/9499392.pdf
    • http://fezaga.ppuneet.com/uploads/1/3/0/7/130775557/623623.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/6518728435.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/definition_of_science.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/believe_in_yourself_dr_joseph_murphy.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/55519865105.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7556/files/wagon_wheel_karaoke.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/dotinilabulakapusebideta.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/bimevodavajip.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/dudev.pdf
    • https://cdn.shopify.com/s/files/1/0438/2228/4960/files/zokuferujojamodofudat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/full_form_of_all_abbreviations.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_off00006f85.bin
c8c3c7b9f8630a5c220a6386bd408d9a743300b10411c4dcf3e9733cc6845605		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 5408 bytes
font_01_sfnt_off000081d6.bin
8bedbb3d5f7844bd4a873906d1b990ac61d898ca32a75da7b08bdc15a83a8bed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D6 10092 bytes

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