Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac2fb34d54697b0…

MALICIOUS

PDF

48.8 KB Created: 2020-07-30 20:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fafcb917cacb8b3ffca9c842c1787211 SHA-1: a5cd173e99c510763b3840119d368d264ee3b381 SHA-256: aac2fb34d54697b0eeacadb5e050e28f54e04f3414dbf97245043cb01f4fefa4
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a significant number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=obstacle+avoiding+robot+arduino+code+pdf', is identified as a known malicious redirector. The presence of numerous links hosted on Shopify, combined with the malicious redirector, strongly suggests a campaign aimed at distributing malware or conducting phishing attacks.

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.ru/pify?keyword=obstacle+avoiding+robot+arduino+code+pdf
    • http://files.trackingclubofma.com/uploads/1/3/0/8/130874210/3971527.pdf
    • http://files.lavenderbluevintagedesigns.com/uploads/1/3/0/7/130775737/7719268.pdf
    • http://files.lindalgraham.com/uploads/1/3/1/4/131455283/7d86161771d526.pdf
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/timofosiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/4442099629.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/madibedebavuvevixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikodizexosuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/17486699256.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/babukupinozimotiwuramo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/bowexifavulatewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4263/4917/files/nebokonubizopukaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/kidusiposenisamu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3123/files/62670824759.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/64633480671.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/pivole.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/zadivuvumedaxujazavuzo.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/
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007464.bin
e3e0b95c76e32cb8224cba750a11277d89073614ec235c02fe732e0708563ca0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7464 5432 bytes
font_01_sfnt_off000086df.bin
d4eaad31672dc32aa28314e0217f5b9c3489d356607f73da1288f8c09f34e680		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86DF 15156 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.