Malicious PDF — malware analysis report

Static analysis result for SHA-256 01dc6334e6a091f4…

MALICIOUS

PDF

40.2 KB Created: 2020-08-24 13:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f8b5b0ba60f1888e5d46a946919eec4 SHA-1: 090b5deb8edce9aa191657b782459c0bbe9a06e6 SHA-256: 01dc6334e6a091f47283cf839671d3032111a06167963ef496f4ebc328c674de
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link to 'ttraff.cc' is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users to malicious infrastructure. The presence of numerous links and the identified malicious redirector strongly indicate a phishing or malware distribution attempt.

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=pipe+bending+machine+manual+pdf
    • http://files.furnacehillscoffee.com/uploads/1/3/1/8/131871721/wufotemuda.pdf
    • http://files.mwcatlanta.org/uploads/1/3/1/4/131407796/mamefor-somozede-jisobidaniximi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/68424622198.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/sokimagene.pdf
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/keto_diet_meal_plan_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/depeguteludejadi.pdf
    • https://cdn.shopify.com/s/files/1/0463/0550/9533/files/congruent_triangles_coloring_activity_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/65531859939.pdf
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/round_corners_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/sefas.pdf
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/hearthstone_kobold_adventure_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/22704573018.pdf
    • https://cdn.shopify.com/s/files/1/0464/6354/9592/files/12043633157.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://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000493b.bin
b450e7bf0d337b338af782182fc2cdf63485489be3e7aa55dc920d03284c3195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x493B 5436 bytes
font_01_sfnt_off00005b77.bin
9a48dee28ed7ce0ebd7499afab5e0e264fd6304a8af85daca7c3ce9c6e2ae3bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B77 7088 bytes
font_02_sfnt_off00006ec8.bin
66e03a1940cf403441f2116301650e13bc26fbe8021c127f5df2b85c4c209332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC8 10744 bytes

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