Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeadbfe1fd004231…

MALICIOUS

PDF

33.9 KB Created: 2020-08-22 10:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19fa91693c6f53802e86f946ecf2fc85 SHA-1: db8bce1b438ec3f62e5d910959e1946f808dc9f0 SHA-256: aeadbfe1fd004231e160f9703e280e190d096b492632fc744670bdeab2cb1a19
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains the same malicious URL. This suggests a lure to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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.com/pify?keyword=elmach+blister+packing+machine+manual+pdf
    • http://rokusive.riverlc.com/uploads/1/3/0/8/130815097/3805720.pdf
    • http://files.jocelynoades.com/uploads/1/3/1/1/131163969/62df46cf9d19.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0993/files/41753617685.pdf
    • https://cdn.shopify.com/s/files/1/0431/7030/0061/files/namamukitus.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/chevy_350_rebuild_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/pezizatazitekuvenij.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/vigupifisikiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/nvidia_gtx_960m_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0438/3942/2624/files/42471612513.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/waviwegitajudab.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/34101025039.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/tedup.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/bus_parisien__plateforme_maquette.pdf
    • https://cdn.shopify.com/s/files/1/0457/5464/6684/files/58022114405.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/97773469170.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_off000044bf.bin
057dd6efd36dad70acff695d764f2679531ff858387145436c5e92d4b2852841
pdf-font-stream PDF embedded font (sfnt) at offset 0x44BF 5728 bytes
font_01_sfnt_off00005815.bin
583745c9eeb01c99061599e1217935bf76d3cfa5ecda557c8a4c0624d64978f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5815 9636 bytes