Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14de56b2fa24657…

MALICIOUS

PDF

38.1 KB Created: 2020-08-13 11:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de74d4585276f3220fdf45d44eecd45b SHA-1: fcdf178ea0a167c48eb5009bf7e9ee5f7dae6adb SHA-256: f14de56b2fa2465728c6dc7164b2f95a7084afe357bdeff6244894c6f4e42570
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains this malicious URL. The presence of numerous links, many hosted on potentially compromised or disposable domains, strongly suggests a link farm or phishing lure. The ML classifier also flagged this PDF with high confidence.

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/wb?keyword=first%20person%20second%20person%20third%20person%20chart%20pdf
    • http://wukop.dhltaiwanconnects.com/uploads/1/3/1/0/131071047/wesogadinujegosoneb.pdf
    • http://jifuze.treeoflifeanglican.org/uploads/1/3/0/8/130874493/lebazesam-kiwir.pdf
    • http://dudukelo.americanscribbler.com/uploads/1/3/2/8/132814930/5708659.pdf
    • http://files.amandawinkler.com/uploads/1/3/2/3/132302963/2242517.pdf
    • http://wogisu.joanieyanusas.com/uploads/1/3/1/4/131407222/kavumobef-nuzoduk.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/81993382623.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/56369577833.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/traduction_anglais_franais_google.pdf
    • https://cdn.shopify.com/s/files/1/0436/3629/3785/files/gw2_cooking_guide_400-_500.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/18709761947.pdf
    • https://cdn.shopify.com/s/files/1/0435/9041/8591/files/lobadagexu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/kofeludovupalinev.pdf
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/xixerizolizuromog.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/92728315930.pdf
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/dojazuzatumubenu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/88831528933.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/vusomukuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9671/files/nejixuzazarijepibefu.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_off0000576f.bin
aa8eaf9403dfb535028672272ecfed746891b5cbb70fe37d61a7a771b49fe7d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576F 5168 bytes
font_01_sfnt_off000068f5.bin
2e4610c6752e0a20d9d31694fdf6d5709c1d2be51ef59ab2759beb3738a5ea11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F5 9940 bytes

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