Malicious PDF — malware analysis report

Static analysis result for SHA-256 125a502276b13647…

MALICIOUS

PDF

77.1 KB Created: 2020-08-22 23:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2860b9a1db20e868cad67cf22389efbd SHA-1: 815aa29684090b95539b33667f24c5286c338149 SHA-256: 125a502276b136472e7b4f7c4d88317a7bc81c58d4f18534e4e796859766e7da
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a product manual lure, combined with the malicious URL. This suggests an attempt to trick users into visiting a malicious site, 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.
  • 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.ru/pify?keyword=aune+x1s+manual
    • http://felifurez.bling45.shop/uploads/1/3/2/7/132740720/fibafiz_nifinidopo_xorilabi_ropubusalikosuj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7938/5766/files/present_perfect_already_and_yet_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/46846887038.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/pharmaceutical_aerosol_file.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/lokaro.pdf
    • https://cdn.shopify.com/s/files/1/0461/3842/5497/files/miracle_box_crack_2._94_setup.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/cindy_trimm_prayers.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/93806401244.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/aqw_quest_id.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0949/9558/files/63651981935.pdf
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/13631879837.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/88998544571.pdf
    • https://cdn.shopify.com/s/files/1/0463/0698/4098/files/vixupuluxujoduvusopip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/65615347724.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_off0000d89a.bin
3a99bfcc8a6322cb1f5d9dd0c76c95525b0630114fc12c53a342d41e6b6e0e01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD89A 2960 bytes
font_01_sfnt_off0000e30a.bin
2dbc14b3e092b71bc5f1a4a5478dbcea6e3d06dff4530a96d91a9d4662f1d120		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE30A 4844 bytes
font_02_sfnt_off0000f376.bin
10e605928df761549c2b795395f741262ce76cedbf72ef90308b5f98fcb7845b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF376 17392 bytes

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