Malicious PDF — malware analysis report

Static analysis result for SHA-256 5508af0ecefcf8ea…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 00:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e27a548953346c4a94e4a3a73fc4a2d SHA-1: 624c81bec38e8e275f03e1c576ced0a05cd55704 SHA-256: 5508af0ecefcf8ea9c5e9616feaa0417f8498b965877cf05029e7f3b04bb409a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a movie and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=bucket+list+marathi+movie++worldfree4u
    • http://files.thelitbitesodyssey.com/uploads/1/3/0/7/130775892/kigaxiwikaxexarot.pdf
    • http://lijogaw.herbanbiophiliac.com/uploads/1/3/1/6/131606490/juget.pdf
    • http://files.eastsuperiorcc.com/uploads/1/3/1/0/131070009/buwugedurutusi.pdf
    • http://files.yournameinstitches.com/uploads/1/3/1/4/131407152/4935649.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/gomozapujasurafuper.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/adjectival_clauses_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0449/8879/2990/files/59970621391.pdf
    • https://cdn.shopify.com/s/files/1/0435/9235/1907/files/67174105374.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/salesosinokidemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/design_of_brick_masonry_structures.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/dibitirofumoveveluruveseg.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/kicker_bundesliga_spielplan_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/98913750386.pdf
    • https://cdn.shopify.com/s/files/1/0431/9664/5538/files/22645969453.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/mathe_bungen_bruchrechnung.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f5.bin
2b04f1d52127648f8173ce8d38183ce2537a0a3c8e77ea202347532ae9f5f2eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F5 5612 bytes
font_01_sfnt_off00007b01.bin
59c0c7938653e3c859703d527edf7296a435368f13d0e2a801faa48a272abb10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B01 15464 bytes

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