Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ec68cdf048eb05…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 18:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4246c57427eaad51ec6a7e67bf1d2ed SHA-1: cc66baa3a72085c3e8172490f410b962b1fd9c85 SHA-256: 38ec68cdf048eb0536f508a15ac37d7511464a8a7931f14dad7ac859c981d594
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains the same lure text and URL, suggesting a social engineering attempt to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. No scripts were extracted from this sample.

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.com/pify?keyword=live+stream+app+for+pc+free
    • http://xawadat.imarsonline.com/uploads/1/3/0/8/130814328/guxeterarinef.pdf
    • http://sekedax.willowickbaseball.org/uploads/1/3/0/7/130739640/suwibudogop.pdf
    • https://cdn.shopify.com/s/files/1/0434/6832/5029/files/88961976463.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3127/files/35299397084.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/kilumelevufubijak.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/get_anyone_to_do_anything.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2311/files/market_analysis_report_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/66986056297.pdf
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/gutamodesal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/78247008807.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/tegizenafozasenivimuvaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/amigdalitis_bacteriana_nios.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/pexatisekimef.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_off00006357.bin
fdcb1d74ddf9feac5d09f73159c91af0d5884233b10e4c1e18a2250e4b17f62e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 4812 bytes
font_01_sfnt_off000073bb.bin
f53512e8242fcb0fbcfd880c652ac9b4abee9dd3b454e3278f09c551233be7da
pdf-font-stream PDF embedded font (sfnt) at offset 0x73BB 10024 bytes
font_02_sfnt_off00009607.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9607 4324 bytes