Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6d4f92c7f1fcb3…

MALICIOUS

PDF

36.3 KB Created: 2020-08-22 05:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c737b70b15b00b363af6d41a37f672d SHA-1: 34d4010b3ca6211eabe91c90de968c1d74d88abd SHA-256: 5c6d4f92c7f1fcb39ce8f12552e823f20bcbec52a97d1fd7153c3018df9108d7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, indicating a link farm. One of the primary links, https://ttraff.com/pify?keyword=creative+strategy+in+advertising+drewniany+pdf, is identified as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing.

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=creative+strategy+in+advertising+drewniany+pdf
    • http://wolisa.philipchindamo.net/uploads/1/3/1/0/131071164/c6dd8f615.pdf
    • http://files.anneoregan.com/uploads/1/3/1/3/131384136/fipinafuluralokajimo.pdf
    • http://mirig.jaspercustomguitar.com/uploads/1/3/1/3/131383483/jiwusowovidi-lufidatapowijav.pdf
    • http://files.honeyhillsapiary.net/uploads/1/3/2/7/132740880/b4a99a327d.pdf
    • http://vozukozox.rhandley.com/uploads/1/3/2/7/132740905/1193359.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/nojalesazite.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16779745642.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/23186583822.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/suvaxokedemow.pdf
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/barood_movie_video_song_tinyjuke.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/how_to_increase_indent_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/32209013639.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/bosch_maxx_5_instrukcja_obsugi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/fawedorudev.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_off00004f88.bin
3542cf05857f6336e267e8eac5c257b5ab758391d2234341a08fee5812cc6294
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F88 5336 bytes
font_01_sfnt_off000061db.bin
52c30f087369215cae2fef076f42cd2bde557f95c44238ba50c308d7bf31f8bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 10008 bytes