Malicious PDF — malware analysis report

Static analysis result for SHA-256 197bf6bf6369c03e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-17 11:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2204158870a3936ee91ab732db3ea40c SHA-1: 40ebb95a2f3430fe48eab2d7b120ab4eef7c8cf1 SHA-256: 197bf6bf6369c03e360c3db021bec1967765a6261f036d2a3832aa12298c27eb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=l%2527+aire+d%2527+un+cone+formule', indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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=l%2527+aire+d%2527+un+cone+formule
    • http://files.trucksntools.com/uploads/1/3/0/8/130815026/7539716.pdf
    • http://files.kidsalldressedup.org/uploads/1/3/0/9/130969656/7eac376.pdf
    • http://files.fiskumc.org/uploads/1/3/1/3/131383398/97b92ad7a0d7.pdf
    • http://sebaradi.carlapasqualini.com/uploads/1/3/1/1/131164394/benajekezituj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lafiku.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8242/files/wovavadojakejuwebame.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/vutigifogobajidijagef.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9690/files/gufizomomalifisekukamo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3132/files/6241334294.pdf
    • https://cdn.shopify.com/s/files/1/0434/9794/7300/files/united_states_army_survival_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/4538932111.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/78483735168.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/71103044125.pdf
    • https://cdn.shopify.com/s/files/1/0431/1305/4357/files/52066269847.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/sartorius_muscle_stretches_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3929/files/ansible_full_tutorial.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067bb.bin
bab498ee7d6b188895d434645e765f3a1b9159125dd43a7c3da389f41ad4c83d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BB 4964 bytes
font_01_sfnt_off00007887.bin
e483a212fc17c1d58d859c28c3a9ee30ef4b144ad9756e6026fc7585e564af82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7887 11264 bytes
font_02_sfnt_off00009edb.bin
fe9655950555603a497fcce5991a407f7a579223dbcb425b0f3813697dfd5ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDB 16088 bytes

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