Malicious PDF — malware analysis report

Static analysis result for SHA-256 705dc8f1252aa006…

MALICIOUS

PDF

54.6 KB Created: 2020-08-24 19:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14e8bafc96e41cee7352f4260bad7a3f SHA-1: 6664d3d613044c8aa4874d3667ecdbf1bc3ad950 SHA-256: 705dc8f1252aa006190c52c467712bcb398d70146aa7e27e60724eb85b04a3a8
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to a video game and the malicious URL, suggesting a lure to drive traffic to malicious infrastructure. The ML classifier strongly indicated maliciousness, and the presence of a redirector link supports a phishing or scamming attack pattern.

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=kingdom+two+crowns+guide+xbox+one
    • http://files.allmeansall.info/uploads/1/3/1/6/131606429/6798764.pdf
    • http://files.crjlawyers.com/uploads/1/3/0/7/130775627/kirajetejuziwun-vanolojep-bulozijaf.pdf
    • http://files.musiccityaviators.org/uploads/1/3/2/7/132710779/51415d12604a7e.pdf
    • http://files.slowfoodolympia.org/uploads/1/3/2/6/132682848/rekoduzokowawofogoso.pdf
    • http://files.monterreywest.com/uploads/1/3/1/6/131637402/gexeno-salawulozow-nojime-lezubarudin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8470/0055/files/14615678507.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/33995094248.pdf
    • https://cdn.shopify.com/s/files/1/0432/8734/7364/files/27523458502.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/local_guide_level_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/exhibitor_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/cg_bhuiya.pdf
    • https://cdn.shopify.com/s/files/1/0435/4428/1247/files/gotononelafoxutewuxoreb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/92386778932.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6144/files/bleacher_report_apple_watch_app.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/zitabadukaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/graal_online_classic_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/xuzomojopoxilek.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_off000097ba.bin
da7a0253b75e6fd777f5bb17dfaaf179436bb16f8dd00cf6fcb864f04f6d4209		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97BA 5284 bytes
font_01_sfnt_off0000a9b2.bin
85b866a9ffd8a56008955ab6889de55341018623155227efa9e4f375ee6bbd26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B2 10576 bytes

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