Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f3d75d4173f347…

MALICIOUS

PDF

56.6 KB Created: 2020-09-08 06:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f067aaf99e356c35aa93f38592927be6 SHA-1: f61bdf0bad7d1e0002772b89a69aef79cc77cfec SHA-256: 89f3d75d4173f3478e63e05c03e91c4b1abf0025e869c6591b447d5e71af2c58
152 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One prominent link, disguised as a tutorial, redirects to the malicious domain 'ttraff.me'. This suggests a social engineering attack aiming to drive traffic to a malicious site, likely for further exploitation 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.me/wix?keyword=ableton+live+9+tutorial+pdf+portugues
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vunususojorimit.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/cibc_annual_report_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6607/files/25832459324.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/academic_journal_guide_2018_by_chartered_abs.pdf
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/pokejujasixi.pdf
    • https://cdn.shopify.com/s/files/1/0462/3899/0485/files/zemutenewojobalurofufo.pdf
    • https://cdn.shopify.com/s/files/1/0445/3453/0207/files/convertidor_a_word_gratis_candy.pdf
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/b._sc_maths_paper.pdf
    • https://cdn.shopify.com/s/files/1/0447/8582/7991/files/list_of_hand_embroidery_stitches.pdf
    • https://cdn.shopify.com/s/files/1/0457/4422/6460/files/eater_of_worlds_written_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/90555458189.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/pdf_editor_online_free_edit_text.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8041/files/viwanamazopilukopixofowa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/9685611029.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009245.bin
5f31b57ada7db3b02ba0a2076e7f8cc06f31a89b11d6e0eb232e7dcac6c1e5e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9245 5436 bytes
font_01_sfnt_off0000a4d2.bin
dda193b8cbfc5ab94a43d8c10df6dd8553f72dce57839a0ada7c014c0456ba5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4D2 10128 bytes
font_02_sfnt_off0000c77b.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC77B 4324 bytes

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