Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18560fba756aad6…

MALICIOUS

PDF

42.2 KB Created: 2020-08-06 00:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf666b48e1fd007cd9602a9cf468dac2 SHA-1: 70d02f2a8f0bf643ba480d0882550f5fdade1a7d SHA-256: a18560fba756aad6cda8b80d9a6a6fe511584956aba8a365e25a119b64587375
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=can+t+help+falling+in+love+with+you+guitar+pdf'. Additionally, it exhibits a PDF link farm behavior, with numerous links to external PDFs hosted on platforms like Shopify. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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.cc/pify?keyword=can+t+help+falling+in+love+with+you+guitar+pdf
    • http://files.sweetblackberry.org/uploads/1/3/0/7/130738696/f187805e9dcb.pdf
    • http://files.bellcreekagility.com/uploads/1/3/1/4/131436981/7642610.pdf
    • http://xojazeko.propheticgeneration.com/uploads/1/3/0/7/130775320/db066b.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/mojoranoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/public_speaking_rubrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/pojiraxazidofufotajifa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/rimigavijewelegeborukex.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/23084243428.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/komorugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/45617488397.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/lapijegig.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/powugamuronukutovuwoze.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/chain_rule.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/musonutaxowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/kinexejamiso.pdf
    • https://cdn.shopify.com/s/files/1/0438/2287/4781/files/82026459549.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066a6.bin
576241470bfe52e02e3f9259e90f5bc4f40810cd742f9a5a1ff89d62c7057a81
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A6 5284 bytes
font_01_sfnt_off000078b4.bin
784d70bbb42cf0fc2fb885df5921cf436beb30ca4c64d804588ee310eb586d40
pdf-font-stream PDF embedded font (sfnt) at offset 0x78B4 10224 bytes