Malicious PDF — malware analysis report

Static analysis result for SHA-256 da2a7cfa73ae78fd…

MALICIOUS

PDF

118.1 KB Created: 2020-08-09 02:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 037b3ea240feaa9b8c6bf62e0ff53db3 SHA-1: 40de3146e58b7c4ee33d41ddbe2a579de83776a4 SHA-256: da2a7cfa73ae78fde9acaf6c773c4002a1a034c8e68a3c7c6dd2cdb261f7bace
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=pre+calculus+grade+11+pdf+learners+module'. This URL is likely used to redirect the user to a malicious site or download further payloads. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a large number of external PDF links, many pointing to Shopify domains, indicates a link farm SEO tactic to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=pre+calculus+grade+11+pdf+learners+module
    • http://files.msdanielledobeleit.com/uploads/1/3/0/8/130874380/3665375.pdf
    • http://gupijo.ncawpa.org/uploads/1/3/0/8/130814124/4c2545.pdf
    • http://files.traumatotango.com/uploads/1/3/1/3/131384573/7501266.pdf
    • http://files.coachingwithcourtney.com/uploads/1/3/1/4/131406258/373581abbc0880.pdf
    • http://files.kathrynbartlett.com/uploads/1/3/1/4/131483662/80740eb.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/45826535895.pdf
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/33584753787.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/patasiraduf.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/jibetu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/58860237631.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/97613385117.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/majestic_mountains_sse.pdf
    • https://cdn.shopify.com/s/files/1/0438/3365/5446/files/lomilutisivufowurifomeka.pdf
    • https://cdn.shopify.com/s/files/1/0433/5324/3806/files/jatoxugesod.pdf
    • https://cdn.shopify.com/s/files/1/0436/6237/7113/files/t_wayne_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7696/files/46889437917.pdf
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/74291218192.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/lumejokawuwopagisezusaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/73511377703.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_off00017167.bin
64e0d3162a2b602b340aa3abf2981b5dcd5965dde5bb39f9efa4a7da35b05b5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17167 5528 bytes
font_01_sfnt_off00018424.bin
d82988474cadd872fd83bbea6f6fdc0b0c7b25aa6328f47b14be741583ccd243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18424 15768 bytes
font_02_sfnt_off0001b51e.bin
8e1ea2dbc10ce1e733df7fdea8c083e0faff811cf1aa2cb486553edc1a93aa04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B51E 16128 bytes

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