Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3053a0c0f742c5…

MALICIOUS

PDF

46.9 KB Created: 2020-08-14 15:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee9630357b575bc05ac7afbe5de0ec23 SHA-1: 61852230aee9ddf99df662cdb92ac7f72266fa9d SHA-256: 1c3053a0c0f742c59fc7cfe14bf370ba8000f6a939b111a23c9df2370441586e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with at least 20 pointing to external resources, classifying it as a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to lure users to malicious sites. No scripts were extracted, but the sheer volume of links and the presence of a malicious redirector strongly indicate a phishing or redirection attack.

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/pify?keyword=fiche+m%25C3%25A9tier+guide+touristique+pole+emploi
    • http://files.wslarchitect.com/uploads/1/3/1/4/131406182/lepiwoxesu_bonad.pdf
    • http://lunop.benipomskies.com/uploads/1/3/1/4/131453109/7bf565a22.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/piping_isometric_drawing_standards.pdf
    • https://cdn.shopify.com/s/files/1/0435/8144/0168/files/lojimuvuxokobe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/70660500014.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/barron_s_gre_word_list_with_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/78204919216.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/cavitation_in_pumps.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/voguzatafa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6290/files/97278174461.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_off00006775.bin
eea9591e903aec41876193c9964adaa2d4f79c23cd43c2a4f2ce0c6ae2903801
pdf-font-stream PDF embedded font (sfnt) at offset 0x6775 5276 bytes
font_01_sfnt_off0000791a.bin
8b20ce342ac035283b7579c591cf16cce13736cd74fdb0d6ed66a422adf168b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x791A 12012 bytes
font_02_sfnt_off00009eb6.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB6 4324 bytes