Malicious PDF — malware analysis report

Static analysis result for SHA-256 37fe7332da894a33…

MALICIOUS

PDF

44.5 KB Created: 2020-08-03 04:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc3012db2d67774054b4f47f58426b16 SHA-1: 82db5f6b511172137c55689bf01c3e37641e30aa SHA-256: 37fe7332da894a33578e75f10291b3513a20d23c20f923da175df1ced8d2f474
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though partially corrupted, contains text related to a 'Locks of love donation form' and includes the malicious URL. This suggests a phishing attempt where the user is tricked into clicking the link under the guise of a donation form, leading them to malicious infrastructure.

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=locks+of+love+donation+form
    • http://files.chrisdawphotography.co.uk/uploads/1/3/1/6/131637402/5021266.pdf
    • http://files.a-mel.co.uk/uploads/1/3/2/6/132681307/fuzubezakalune.pdf
    • http://files.kathleenmitchellstudio.com/uploads/1/3/1/3/131383478/sunefaniluweres-wevinezalewiw-lonifizi-sidopuworuw.pdf
    • http://files.alessiadickson.ca/uploads/1/3/1/4/131452982/marupapatu_babuteb_zevaga_jurepiweginor.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/9121253757.pdf
    • https://cdn.shopify.com/s/files/1/0431/0535/3889/files/notikolagulox.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/53828983509.pdf
    • https://cdn.shopify.com/s/files/1/0437/3345/0903/files/92559293145.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/34238772533.pdf
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/girugoxepumunufado.pdf
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/79542833982.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/jawoxovupusinesodedawef.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/vunudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/wotipufenonilemavadatik.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_off00007067.bin
e86b8baa92025d21dbfe22ba77ffd41352f4db737aeea2d66f10828fdc461dd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7067 5232 bytes
font_01_sfnt_off00008232.bin
b6008b9661826d6f47d07ec2197ad52fd0b1399a0727926113b59796cf172ed7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8232 10320 bytes