Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f039efcc558820a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 09:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcf493c7780553f9e88d5ed710207e96 SHA-1: bc7d88ced3325035117fde66f69f053e56aba09e SHA-256: 0f039efcc558820a41e02054466e24f85bdcdfa1bd8c797c32e2700ff9ba83e9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one critical heuristic identifying it as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Dell poweredge fx2 pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of many external links and the redirector heuristic strongly indicate a malicious intent to lead users to harmful content.

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=dell+poweredge+fx2+pdf
    • http://junule.lowvisionnd.com/uploads/1/3/1/4/131452821/tezodugibogup_zubidumezufak_nuwigutilo_xifadaluji.pdf
    • http://files.hsc3knives.com/uploads/1/3/0/9/130969243/a00465f049b.pdf
    • http://files.intempodanceensemble.org/uploads/1/3/1/8/131871874/wedodav-tipuzajuvetidiw-luwotapupivegus.pdf
    • http://getub.boxelderfoodpantry.org/uploads/1/3/2/6/132682787/342f934d89b4b34.pdf
    • http://terowo.floorstogoblog.com/uploads/1/3/1/6/131636725/wakizajenozo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/mcdonalds_online_application.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/77624182443.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/fimagipalabuzubeba.pdf
    • https://cdn.shopify.com/s/files/1/0435/5601/2191/files/shon_harris_cissp.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/15267428696.pdf
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/45229955327.pdf
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/jilam.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/64060008907.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/49636085445.pdf
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/pafagabumuwiwijipojimele.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/zuwulawolegusubevozagula.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/apocrypha_concordance.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006096.bin
ddf053ed456e16dce42e52884fe0a8c9776577959db2588a5a24e30a883885b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 5112 bytes
font_01_sfnt_off00007230.bin
033a1d5db32886b9372c0bca59202a991c6df901faed2fce23665c28de5f1e86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7230 10372 bytes

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