Malicious PDF — malware analysis report

Static analysis result for SHA-256 aefecf03e197d1fe…

MALICIOUS

PDF

58.8 KB Created: 2020-07-09 23:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fa97b3fb3849532cdec8518da03bda5 SHA-1: 381b6c5875fd279acf39d2e793bb3f36f53d0dc0 SHA-256: aefecf03e197d1feecff2e11f75385e8272fdd18ec2b10e47fe662ba27bb15fb
152 Risk Score

Malware Insights

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

The PDF contains a high density of embedded links, many of which point to domains associated with link farms and redirectors. The primary URL, https://ttraff.com/wb?keyword=prognosis%20of%20down%20syndrome%20pdf, is flagged as a malicious redirector. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, but the extensive link farm indicates a strong intent to redirect users to potentially 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/wb?keyword=prognosis%20of%20down%20syndrome%20pdf
    • http://files.donniebickham.net/uploads/1/3/1/0/131070483/kapewosanuxagu.pdf
    • http://files.thedinopark.com/uploads/1/3/2/7/132740415/6535022.pdf
    • http://files.yashbangera.com/uploads/1/3/0/7/130738625/83486b04a35.pdf
    • http://files.vicenzas-crostoli.com/uploads/1/3/1/4/131483253/9062675.pdf
    • http://files.learnguitar4fun.com/uploads/1/3/1/8/131856381/8522082.pdf
    • http://files.mbilder.com/uploads/1/3/1/4/131406816/1092288.pdf
    • http://files.alexwilsonpianist.com/uploads/1/3/1/4/131437566/1305517.pdf
    • http://files.divinenaturearts.com/uploads/1/3/1/4/131409055/vekenuzupapuk_xokefepot_milofudowo_ketekas.pdf
    • https://mobulozasa.files.wordpress.com/2020/06/zevoravanepimakadizimete.pdf
    • https://pigarudumo.files.wordpress.com/2020/06/85108794376.pdf
    • https://mudobemazi.files.wordpress.com/2020/06/10554338320.pdf
    • https://kojumisukure.files.wordpress.com/2020/07/tijuko.pdf
    • https://rivinataru.files.wordpress.com/2020/07/52478376132.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10542261424.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12509012650.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78549170372.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.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_off0000a9f8.bin
df9123c2d67ed28cfb5d80ab049a89f284d2cb1653d1e17f0f625c1a1775764c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9F8 5024 bytes
font_01_sfnt_off0000baf9.bin
d70e568fedf161fe409d50a52910deebd1c6f46fcabc87ca41610351a7caffab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF9 10392 bytes

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