Malicious PDF — malware analysis report

Static analysis result for SHA-256 48117cac832cba71…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 03:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b7ca8257dab7714a77fbad583a8f0fb SHA-1: 43441812522060b4037e0ac1b4b64e0fdcaa5d86 SHA-256: 48117cac832cba71bc969b7a2922e5802264e1704120e3d0db821c5e4eeca948
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.ru/pify?keyword=antenna+theory+and+design+third+edition+so
    • http://files.katsmodernizedhomedecor.com/uploads/1/3/1/3/131397987/zolimiberoretodidi.pdf
    • http://files.stregoniband.com/uploads/1/3/2/6/132681773/7253719.pdf
    • http://files.cestarifreshlamb.com/uploads/1/3/0/7/130740323/33e2f5.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21800621301.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/15769707616.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/create_fake_marriage_certificate_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/51198548577.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/pixotatoxofigibiripibi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/20324194650.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/the_art_of_looking_sideways.pdf
    • https://cdn.shopify.com/s/files/1/0445/3462/8516/files/kylee_strutt_gif.pdf
    • https://cdn.shopify.com/s/files/1/0437/0114/1657/files/96333380661.pdf
    • https://cdn.shopify.com/s/files/1/0434/0016/7589/files/48488285414.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/dikagerokezesogoliba.pdf
    • https://cdn.shopify.com/s/files/1/0439/4962/1406/files/befadujepopategijizi.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_off00005f1d.bin
92204d7ef2e28ba955da57ea74a4eb2558cff79715a38d9da401fd603b9dec83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1D 4932 bytes
font_01_sfnt_off00006fda.bin
004292643db89da17b26d875d8db6a2128460fa87ddd8e875b1b02f40674ee00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 9900 bytes
font_02_sfnt_off000091bd.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91BD 4324 bytes

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